Questions arise on both sides of the border about the decision to relocate drug lord Joaquin "El Chapo" Guzman to a region that's one of his cartel's strongholds, and a Mexican official acknowledges the sudden transfer was to a less-secure prison.

The New York trial began under razor tight security for Joaquin "El Chapo," accused of running the world's biggest drug cartel and spending a quarter of a century smuggling more than 155 tons of cocaine into the United States.

Mexican authorities have said a son of imprisoned drug lord Joaquin 'El Chapo' Guzman is among the half-dozen men who have been abducted by gunmen at a restaurant in the beach resort of Puerto Vallarta.

Convicted drug lord Joaquin "El Chapo" Guzman, who twice pulled off brazen jailbreaks and is fighting to avoid extradition to the US, has been transferred to a prison in northern Mexico near the Texas border.

The ex-beauty queen wife of Mexican drug kingpin Joaquin "El Chapo" Guzman has blasted the Mexican government in a TV interview, claiming that they turned her loving husband into the world's most wanted criminal.